Background and Purpose: Minas Sub-district produces oil and gas-produced water which reaches millions of m2 per day which is re-injected into underground formations because produced water in Indonesia is still considered as the residual water of the oil and gas industry or as waste water which can cause environmental problems. Unlike in developed countries, which considers produced water is an …
ABSTRACT The utilization of ozone is commonly applied in various fields, for instance, it is used as a disinfectant for water treatment, disinfecting, sterilizing medical devices and preserving foodstuffs. Ozone is a nearly colorless gas with a characteristic odor that can be detected by humans up to 0.01 ppm. It can be produced by the dielectric barrier discharge method, which is generally us…
This study aims to determine the quality of the design of written test instruments with a guided inquiry model based on scientific literacy on the material of the circulatory system in humans for eighth grade students of junior high school developed. This research is a Research and Development (R&D) with the stages of analyzing, design, and development, implementation, evaluation. This research…
This study aims to determine the level of social intelligence of citizens studying at PKBM Kak Seto Pekanbaru. The formulation of the problem in this study is how high the social intelligence of citizens studying at PKBM Kak Seto Pekanbaru?. This study consists of 9 indicators, in accordance with opinions Howard Gardner. The population in this study were 60 people. This research sample uses tec…
Piping system is used for fluid distribution that is very important in various fields of industry. When compared to other transportation systems such as vehicles, piping systems have a higher level of integration and are more effective. The need for systems is increasing in the industrial sector. Therefore, various types of damage that can occur in the pipeline system are important to be assess…
Concept mastery is the ability of students to understand science scientifically both concepts in theory and their application in everyday life. The SSCS learning model is able to improve students' concept mastery abilities. The method used to measure the level of mastery of student concepts is done by applying Bloom's taxonomy to the categories of remembering, understanding, applying, analyzing…
Shallot productivity can be increased by taking into account the right fertilizer factor and the potential of the seeds used. The study of potassium and manure dosages and seed size were carried out to get the best treatment in increasing growth and yield. The study was conducted in the Experimental Garden of the Faculty of Agriculture, University of Riau, from February to April 2019, using a d…
This research was conducted in September 2019 in the fish hatchery and breeding laboratory of the Faculty of Fisheries and Marine of Riau University and Photomocrography laboratory of Mathematics sand Natural Sciences Faculty, Riau University. The purpose of this study was to evaluate the effect of different in the concentration of young coconut water on NaCl on sperm motility, viability, ferti…
This research is background by illegal retribution on CPO trucks made by thugs in Dumai City that have occurred long ago. Although community resistance but illegal retribution continue to occur. This study uses the theory of social exchange. The purpose of this study is to find out the social exchange that occurs between thugs, the social exchange between the driver and the thugs and the effort…
ABSTRACT This study aims to analyze empirically the influence of audit opinion, management change, return on equity, audit fees to auditor switching and analyze whether the auditor's reputation is able to act as a moderating variable.The population is manufacturing companies on the Indonesian stock exchanges for the period 2013-2018. The sample method is purposive sampling with result of s…
This research aimed to improve Student’achievement of students in class VIII.5 of SMP Negeri 5 Pekanbaru by implementation Learning Cycle 7E model with Mind Mapping technique. It was done in SMP Negeri 5 Pekanbaru on Maret of Mei 2019. Parameters which measure were student’s achievement. The methods of this research was classroom action research by implementation Learning Cycle 7E model wit…
Tourism is one of the new industriest that can provide faster economic growth in terms of employment, income, living standards, and the effectiveness of other industrial sectors. The development of tourism in a region will bring many benefits for the society, namely economically, socially, and culture. Therefore, researchers want to see the efforts of local governments in the development of tou…
ABSTRACT This study aims to increase learning motivation and results student learning through the application of the PBL learning model combined with the NHT strategy on the subject of stoichiometry at MAN 1 Pekanbaru. The population in this study is all students of class X MIA, amounting to four classes. Normality test use Liliefors test which aims to see whether the data used have a normal d…
This research is motivated by a problem that arises from observations made by researchers, namely the Regulation of the Regent of Indragiri Hilir Number 1 of 2014 concerning the Maghrib Community Reciting Movement in Tembilahan Sub-District, Tembilahan Sub-District City. The formulation of the problem in this study is how the Community Perception of Indragiri Hilir Regent Regulation Number 1 of…
ABSTRACT The contents of the rumen of cattle are ruminant animal slaughter waste in the form of a collection of feed material that has not been fully fermented and which has not been fully digested by slaughtered cattle. NPK fertilizer is compound fertilizer that has been formulated in such a way by the factory, so that it can be used immediately. The research aim to examine the effect of inte…
This study aims to describe the understanding of students' concepts and to know the difference in understanding of the concepts of class VIII students at SMPN 3 Pekanbaru with the application of the Teaching With Analogie (TWA) learning model and conventional learning on pressure material. This type of research is true experimental design with a posttest control only design. The research sample…